The Olimexino-328 board takes Arduino a step further, addressing issues and implementing features that have been on Arduino users' wish lists for years:

Crystal socket. You can replace the 16MHz crystal easily with one of your desired frequency.

9-30V power supply. The original Arduino uses a linear power supply; this limits the input voltage range. The Olimexino is designed to accept power from 9 to 30V DC, making it possible to use virtually any power supply adapter on the market. This also enables applications which use a 24V DC industrial power supply.

Industrial temperature range. The original design was limited to commercial 0-70C operating temperature. All Olimexino components have been selected to work reliably in the industrial temperature range of -25 to +85C, so the board can be used in industrial applications.

Ultra low power. The original Arduino design is not good for portable applications, as it consumes too much power with its linear voltage regulators. The Olimexino uses ultra-low-power voltage regulators — the consumption is only a few microamps — which enables hand-held and battery-powered applications.

Built-in battery charger. The Olimexino adds a Li-Ion rechargable battery power supply option with an on-board charger, so when you attach a battery it is automatically charged and kept in this state until another power source (USB or external adapter) is removed. Then it automatically will power the board — no jumpers, no switches!

3.3V or 5V operation. Selectable with a switch.

UEXT connector. This connector allows you to add one of many existing Olimex modules (see below).

RTC. The Olimexino design allows for a Real-Time Clock.

Noise immunity. The original Arduino design did not follow Atmel recommendations, which created problems with Reset when using motors. The Olimexino has fixed this flaw.

Separate voltage regulator for Analog. This allows the ADC to be read correctly without digital noise pickup.

Provision for Aref precise source. This is in case you need higher precision and temperature stability in analog reading.

LEDs and buttons on edge of board. Now they can be seen and touched even when you have shields installed.

All components lower than connectors. No more interference with your shields.

Mini-USB connector. Now you can use a cable you may already have for a cell phone or other hand-held device.

0.1" spacing. The original Arduino design had a flaw: the connectors were not spaced at 0.1" which made perfo board use impossible. While the Olimexino includes the same connectors for compatibility with existing shields, it also has 0.1" spaced connectors that you can use with perforated boards.

Top and bottom silkscreen. All signals on the connectors are printed on the top and the bottom of the board, so when you check with a probe you know exactly which port you are measuring.

4 mounting holes make board attachment easier.

UEXT Connector

As well as Arduino shield connectors, this board has the Olimex universal expansion connector, UEXT, which allows you to add peripheral modules easily. The UEXT can provide I2C, RS232, SPI and power to the external device. Please see the UEXT Boards Category for a full list of modules that can plug into the UEXT port.